Hydraulic power tongs with locking mechanism

Abstract

The utility model relates to the technical field of hydraulic power tongs, in particular to a hydraulic power tong with a locking mechanism, which comprises a bearing platform, a fixed platform, a connecting tong and a hydraulic cylinder, the fixed platform is fastened on the top of the upper end of the bearing platform through a bolt, a plurality of connecting seats are welded on the periphery of the upper end of the fixed platform, and the connecting tong is connected with the hydraulic cylinder. A linkage rod is movably connected to the middle of the inner wall of the connecting clamp, an inner bearing seat is movably connected to the end, away from the connecting clamp, of the linkage rod, a hydraulic cylinder penetrates into the middle of the lower end of the bearing platform, and the hydraulic oil input end of the hydraulic cylinder communicates with a connecting oil pipe. The locking system has the beneficial effects that the ascending and descending actions of the inner bearing seat are locked through threaded locking and fixing, it is ensured that when goods are grabbed, the telescopic rod does not retract in the contraction action, and the possibility that the connecting clamp grabs unfirmly is avoided, the locking system plays a secondary protection role, the possibility that the connecting clamp grabs and gets loose is reduced, and the safety of goods is improved. And safety guarantee is provided for grabbed articles.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic power pliers, in particular to a hydraulic power pliers with a locking mechanism. Background Art

[0002] The hydraulic power tongs are composed of an oil tank, a power mechanism, a pressure relief valve, and an oil pumping mechanism. They convert the oil pumping form of high and low pressure oil pumps into a power actuation form. They have the advantages of simple structure, few parts, and easy assembly. They are widely used in our daily lives. At the same time, their hydraulic power tongs also have certain uses in cargo grabbing and transportation.

[0003] In the use of existing hydraulic power tongs, the hydraulic cylinder drives the power tongs to contract to grab and fix the objects. Once the hydraulic cylinder releases pressure or leaks pressure, the internal power of the hydraulic cylinder is insufficient, causing the power tongs to retreat a certain amount, which is likely to loosen the objects and cause grabbing failure, resulting in certain economic losses and troubles for users. For this reason, we propose a hydraulic power tongs with a locking mechanism. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic power tongs with a locking mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the hydraulic power tongs with a locking mechanism include: a base, a fixed platform, a connecting tongs and a hydraulic cylinder, the top of the upper end of the base is bolted with the fixed platform, and a plurality of connecting seats are welded around the upper end of the fixed platform, a linkage rod is movably connected to the middle of the inner wall of the connecting tongs, and the end of the linkage rod away from the connecting tongs is movably connected to the inner base, a hydraulic cylinder is penetrated into the middle of the lower end of the base, and the hydraulic oil input end of the hydraulic cylinder is connected to a connecting oil pipe, a connecting sleeve is fixed to the hydraulic cylinder along the middle of the inner wall of the base, and an internal thread is provided on the inner wall side of the upper end of the connecting sleeve, and a telescopic rod is fixed to the power output end of the hydraulic cylinder.

[0006] Preferably, a movable pin on the inner wall of the connecting seat is connected to a connecting clamp, and a locking serration for locking objects is provided on the inner wall at the end of the connecting clamp.

[0007] Preferably, a fixing seat is fixed at the connection between the inner bearing seat and the linkage rod, and the fixing seat and the linkage rod are movably connected.

[0008] Preferably, a connecting rod is fixedly connected to the middle portion of the inner wall of the inner bearing seat, and a counterweight is fixed to the connecting rod along the lower end of the inner bearing seat.

[0009] Preferably, the connecting rod is fixedly connected with a bearing along the lower end of the counterweight block, and the inner ring of the bearing is fixedly connected to the outer wall of the connecting rod.

[0010] Preferably, the support platform is fixedly connected to a servo motor along one side of the hydraulic cylinder, and the power shaft of the servo motor is keyed to a transmission gear, one side of the outer wall of the transmission gear is meshedly connected to a connecting gear, and an externally threaded sleeve is fixed to the bottom of the lower end of the connecting gear.

[0011] Preferably, the connecting gear and the inner wall of the externally threaded sleeve are fixedly connected to the outer ring of the bearing, the outer wall size of the externally threaded sleeve matches the inner wall size of the connecting sleeve, and the externally threaded sleeve and the internal thread are threadedly connected, the inner bearing seat is locked and fixed with the connecting sleeve through the meshing transmission of the servo motor, and the connecting sleeve and the support are fixedly connected.

[0012] Preferably, the connecting clamp forms a hydraulic grasping structure through the inner bearing seat and the hydraulic cylinder, and the connecting clamp forms a pulling structure through the linkage rod and the inner bearing seat.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the rising and falling actions of the inner support are locked by threaded locking and fixing, ensuring that when grabbing goods, the retracted action of the telescopic rod will not retreat, resulting in the possibility of the connecting clamps not grasping firmly. The locking system plays a secondary protection role, reduces the possibility of the connecting clamps loosening, and provides safety protection for the grabbed items.

[0014] The utility model proposes a hydraulic power pliers with a locking mechanism. The hydraulic cylinder serves as a power source, and its power input is stable, which meets the need of the connecting pliers to firmly grasp objects and ensures that the structure can operate effectively. The inner bearing seat drives a plurality of linkage rods to move synchronously in the countryside, and a plurality of connecting pliers rotate inwardly toward each other. The connecting pliers rotate axially along the center of the connecting seat, so that a plurality of connecting pliers synchronously grasp the same component and fix the component, thereby meeting the grasping needs of the connecting pliers and being convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the inner support seat of the utility model.

[0018] In the figure: 1. bearing platform; 2. fixed platform; 21. connecting seat; 3. connecting clamp; 31. linkage rod; 32. locking serration; 4. inner bearing seat; 41. fixed seat; 42. connecting rod; 43. counterweight; 44. bearing; 5. hydraulic cylinder; 51. connecting oil pipe; 52. connecting sleeve; 53. internal thread; 54. telescopic rod; 6. servo motor; 61. transmission gear; 62. connecting gear; 63. external thread sleeve. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-Figure 3 The utility model provides a technical solution: the hydraulic power tongs with a locking mechanism include: a cap 1, a fixed platform 2, a connecting tongs 3 and a hydraulic cylinder 5, the top of the upper end of the cap 1 is bolted with the fixed platform 2, and a plurality of connecting seats 21 are welded around the upper end of the fixed platform 2, a linkage rod 31 is movably connected to the middle of the inner wall of the connecting tongs 3, and the end of the linkage rod 31 away from the connecting tongs 3 is movably connected to the inner seat 4, a hydraulic cylinder 5 is penetrated into the middle of the lower end of the cap 1, and the hydraulic oil input end of the hydraulic cylinder 5 is connected with a connecting oil pipe 51, a connecting sleeve 52 is fixed to the hydraulic cylinder 5 along the middle of the inner wall of the cap 1, and an internal thread 53 is provided on the inner wall side of the upper end of the connecting sleeve 52, and a telescopic rod 54 is fixed to the power output end of the hydraulic cylinder 5.

[0022] Embodiment 2

[0023] On the basis of the first embodiment, the inner wall movable pin of the connecting seat 21 is connected with the connecting clamp 3, and the inner wall at the end of the connecting clamp 3 is provided with a locking serration 32 for locking objects. The connecting clamp 3 forms a hydraulic grasping structure through the inner bearing seat 4 and the hydraulic cylinder 5, and the connecting clamp 3 forms a pulling structure with the inner bearing seat 4 through the linkage rod 31. The connecting clamp 3 is used as a grasping component of the power clamp. The connecting clamp 3 drives the inner bearing seat 4 to move downward by the pulling of the hydraulic cylinder 5. At the same time, the inner bearing seat 4 drives several linkage rods 31 to move synchronously downward. Several connecting clamps 3 rotate inwardly toward each other, and the connecting clamp 3 rotates axially along the center of the circle of the connecting seat 21, so that several connecting clamps 3 can grasp the same component synchronously and fix the component, thereby meeting the grasping requirements of the connecting clamp 3 and facilitating the use of the user. The inner bearing seat 4 and the linkage rod 31 A fixed seat 41 is fixed at the connection, and the fixed seat 41 and the linkage rod 31 are movably connected. A connecting rod 42 is fixedly connected to the middle part of the inner wall of the inner bearing seat 4, and a counterweight block 43 is fixed to the connecting rod 42 along the lower end of the inner bearing seat 4. A bearing 44 is fixedly connected to the connecting rod 42 along the lower end of the counterweight block 43, and the inner ring of the bearing 44 and the outer wall of the connecting rod 42 are fixedly connected. The inner bearing seat 4 serves as a power output component and plays a bearing role. When the hydraulic oil of the hydraulic cylinder 5 is extracted through the oil pump, its telescopic rod 54 contracts along the inner wall of the hydraulic cylinder 5, pulling the connecting rod 42 to move downward, and its inner bearing seat 4 synchronously follows the decline, synchronously driving the connecting clamp 3 to rotate and grab objects. The hydraulic cylinder 5 serves as a power source, and its power input is stable, which meets the need of the connecting clamp 3 to firmly grab objects, ensuring that the structure can operate effectively.

[0024] Embodiment 3

[0025] On the basis of the second embodiment, the support platform 1 is fixedly connected with a servo motor 6 along one side of the hydraulic cylinder 5, and the power shaft of the servo motor 6 is keyed to a transmission gear 61, one side of the outer wall of the transmission gear 61 is meshedly connected with a connecting gear 62, and an externally threaded sleeve 63 is fixed to the bottom of the lower end of the connecting gear 62, the inner walls of the connecting gear 62 and the externally threaded sleeve 63 are fixedly connected to the outer ring of the bearing 44, the outer wall size of the externally threaded sleeve 63 matches the inner wall size of the connecting sleeve 52, and the externally threaded sleeve 63 is threadedly connected to the internal thread 53, the inner support seat 4 is locked and fixed with the connecting sleeve 52 through the meshing transmission of the servo motor 6, and the connecting sleeve 52 and the support platform 1 are fixedly connected, when the telescopic rod 54 is retracted, When the connecting rod 42 is pulled to move downward, the connecting gear 62 on the connecting rod 42 drops synchronously, and the connecting gear 62 is fully matched and connected with the transmission gear 61. At the same time, the servo motor 6 is started, and the servo motor 6 drives the transmission gear 61 to rotate synchronously. At the same time, the transmission gear 61 and the connecting gear 62 are meshed and transmitted. The external threaded sleeve 63 at the lower end of the connecting gear 62 is screwed into the connecting sleeve 52 and fixed by thread locking. The rising and falling actions of the inner bearing 4 are locked to ensure that when grabbing goods, the retracting action of the telescopic rod 54 will not retreat, resulting in the possibility of the connecting clamp 3 not being firmly grasped. The locking system plays a secondary protection role, reduces the possibility of the connecting clamp 3 being loose, and provides safety protection for the grasped items.

[0026] In actual use, the hydraulic oil of the hydraulic cylinder 5 is pumped out by the oil pump, and the telescopic rod 54 thereof contracts along the inner wall of the hydraulic cylinder 5, pulling the connecting rod 42 to move downward, and the inner bearing seat 4 thereof synchronously follows the downward movement. The connecting clamp 3 is pulled by the hydraulic cylinder 5, driving the inner bearing seat 4 to move downward, and at the same time, the inner bearing seat 4 drives several linkage rods 31 to move synchronously downward, and several connecting clamps 3 rotate inwardly toward each other, and the connecting clamp 3 rotates axially along the center of the circle of the connecting seat 21, so that several connecting clamps 3 synchronously grab the same component and fix the component. At the same time, when the telescopic rod 54 contracts, When the connecting rod 42 is pulled downward, the connecting gear 62 on the connecting rod 42 drops synchronously, and the connecting gear 62 is fully matched and connected with the transmission gear 61. At the same time, the servo motor 6 is started, and the servo motor 6 drives the transmission gear 61 to rotate synchronously. At the same time, the transmission gear 61 and the connecting gear 62 are meshed and transmitted, and the external threaded sleeve 63 at the lower end of the connecting gear 62 is screwed into the connecting sleeve 52, and finally fixed by thread locking, the rising and falling actions of the inner bearing 4 are locked to ensure that when grabbing goods, the contraction action of the telescopic rod 54 will not retreat.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic power tongs with a locking mechanism, characterized in that: The hydraulic power tongs with a locking mechanism comprise: a support platform (1), a fixed platform (2), a connecting tongs (3) and a hydraulic cylinder (5); the top of the upper end of the support platform (1) is bolted with the fixed platform (2), and a plurality of connecting seats (21) are welded around the upper end of the fixed platform (2); a linkage rod (31) is movably connected to the middle of the inner wall of the connecting tongs (3), and an end of the linkage rod (31) away from the connecting tongs (3) is movably connected to an inner support seat (4); a hydraulic cylinder (5) is inserted into the middle of the lower end of the support platform (1), and a connecting oil pipe (51) is connected to the hydraulic oil input end of the hydraulic cylinder (5); a connecting sleeve (52) is fixed to the hydraulic cylinder (5) along the middle of the inner wall of the support platform (1), and an internal thread (53) is provided on the inner wall side of the upper end of the connecting sleeve (52); and a telescopic rod (54) is fixed to the power output end of the hydraulic cylinder (5).

2. A hydraulic power tongs with a locking mechanism according to claim 1, characterized in that: The movable pin on the inner wall of the connecting seat (21) is connected to a connecting clamp (3), and the inner wall at the end of the connecting clamp (3) is provided with locking saw teeth (32) for locking objects.

3. A hydraulic power tongs with a locking mechanism according to claim 1, characterized in that: A fixing seat (41) is fixed at the connection between the inner bearing seat (4) and the linkage rod (31), and the fixing seat (41) and the linkage rod (31) are movably connected.

4. A hydraulic power tongs with a locking mechanism according to claim 3, characterized in that: A connecting rod (42) is fixedly connected to the middle portion of the inner wall of the inner bearing seat (4), and a counterweight block (43) is fixed to the connecting rod (42) along the lower end of the inner bearing seat (4).

5. A hydraulic power tongs with a locking mechanism according to claim 4, characterized in that: The connecting rod (42) is fixedly connected with a bearing (44) along the lower end of the counterweight block (43), and the inner ring of the bearing (44) is fixedly connected to the outer wall of the connecting rod (42).

6. A hydraulic power tongs with a locking mechanism according to claim 5, characterized in that: The support platform (1) is fixedly connected to a servo motor (6) along one side of the hydraulic cylinder (5), and the power shaft of the servo motor (6) is keyed to a transmission gear (61), one side of the outer wall of the transmission gear (61) is meshedly connected to a connecting gear (62), and an external threaded sleeve (63) is fixed to the bottom of the lower end of the connecting gear (62).

7. A hydraulic power tongs with a locking mechanism according to claim 6, characterized in that: The inner walls of the connecting gear (62) and the externally threaded sleeve (63) are fixedly connected to the outer ring of the bearing (44); the outer wall size of the externally threaded sleeve (63) matches the inner wall size of the connecting sleeve (52); the externally threaded sleeve (63) and the internal thread (53) are threadedly connected; the inner bearing seat (4) is locked and fixed with the connecting sleeve (52) through meshing transmission of a servo motor (6); and the connecting sleeve (52) and the support platform (1) are fixedly connected.

8. The hydraulic power tongs with a locking mechanism according to claim 1, characterized in that: The connecting clamp (3) forms a hydraulic grasping structure through the inner bearing seat (4) and the hydraulic cylinder (5), and the connecting clamp (3) forms a pulling structure through the linkage rod (31) and the inner bearing seat (4).

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